Door-check



(No Model.)

J. T. MUMFORD.

DOOR CHECK.

No. 597,425. Patented Jan. 18, 1898.

I EH70 251/?" 0 ATTUBNEYJ',

WITNESS UNITED STATES PATENT rricn.

JAMES THOMAS MUMFORD, OF CENTRAL CITY, IOYVA.

DOOR-CHECK.

SPECIFICATION forming part of Letters Patent N 0. 597,425, dated January18, 1898.

Application filed April 3, 1897. Serial No. 630,567. (No model.)

To all whom it iii-02y concern:

Be it known that 1, JAMES THOMAS MUM- FORD, a citizen of the UnitedStates, residing at Central City, in the county of Linn and State ofIowa, have invented certain new and useful Improvements in Door Checks,of which the following is a full and complete specification, such aswill enable those skilled in the art to which it appertains to make anduse the same.

This invention relates to door-checks; and the object thereof is toprovide an improved device of this class which may be used as adoor-lock, but which is preferably designed for holding the door in aclosed position or partially open for ventilation and other purposes.

The invention is fully disclosed in the following specification, ofwhich the accompanying drawings form a part, in which- Figure 1 is anedge view of a door provided with my improved fastening device; Fig. 2,a side view thereof, and Fig. 3 a section on the line 3 3 of Fig. 1..

In the drawings forming part of this specification the separate parts ofmy improvement are designated by the same numerals of reference in eachof the views, and in said drawings I have shown at 5 a door which isprovided with the usual lock 6 and knobs '7, which are mounted on theshaft 8, which passes through the lock in the usual manner.

Secured on the shaft 8, adjacent to the face or inner side of the lock6, is an ellipticalshaped cam-block 9, and I also secure to the doorbelow the look a plurality of keepers 10, which are preferably four innumber. Passin g through the lower two keepers 10 and adapted to slidetherein is a tube 11, the lower end of which is provided with a foot,which is preferably composed of rubber, but which may be composed of anydesired material, and passing through the upper keepers 1.0 is a rod 13,the lower end of which passes into the upper end of the tube 10, and maybe adjusted therein by means of a set-screw 14, and between the lowerkeeper 10, through which the rod 13 passes, and the upper end of thetube 11 is placed a spiral spring 15, the function of which is to forcethe tube 11 downwardly, so that the foot 12 thereof will press upon thefloor.

The upper end of the rod 13 is provided with a stirrup 16, whichincloses the elliptical-shaped block 9, and said block 9 constitutes acam by which the rod 13 and the tube 11 may be raised when one of theknobs 7 of the lock is turned.

The operation will be readily understood from the foregoing descriptionwhen taken in connection with the accompanying drawings and thefollowing statement thereof.

By turning one of the knobs 7 the rod 13 and the tube 11 may be raisedso that the door may be free to swing on its hinges, and when said knobis released the said rod and the said tube will be forced downwardly bythe spring 15, so that the foot 12 will bear upon the floor and securelyhold the door in the desired position.

This device is simplein construction and operation and is perfectlyadapted to accomplish the result for which it is intended, and it willbe apparent that changes in and modifications of the construction hereindescribed may be made without departing from the spirit of my inventionor sacrificing its advantages.

Having fully described my invention, I claim as new and desire to secureby Letters Patent 1. A door-check, consisting of a cam-block secured tothe knob-spindle, a rod provided with a stirrup which incloses saidcam-block, a tube into which the lower end of said rod passes, keeperssecured to the door by means of which said rod and said tube are held inplace, and a spring mounted on said rod be tween one of said keepers andthe upper end of said tube, substantially as shown and described.

2. A door-check, consisting of a cam-block secured to the knob-spindle,a rod provided witha stirrup which incloses said cam-block, a tube intowhich the lower end of said rod passes, keepers secured to the door bymeans of which said rod and said tube are held in place, and a springmounted on said rod be tween one of said keepers and the'npper end myinvention I have signed my name, in presof said tube, said tube beingprovided at its ence of the subscribing witnesses, this 30th lower endwith a foot which is adapted to day of March, 1897.

bear upon the floor and with a set-screw by JAMES THOMAS MUMFORD. 5means of which said 1 0d may be adjusted Witnesses:

therein, substantially as shown and described. WALTER ROCKWELL KIBBER,

In testimony that I claim the foregoing as AMBROSE PERRY WARD.

